CN109553423A - For producing the component and refractory concrete cob brick of refractory concrete cob brick - Google Patents
For producing the component and refractory concrete cob brick of refractory concrete cob brick Download PDFInfo
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- CN109553423A CN109553423A CN201810018114.7A CN201810018114A CN109553423A CN 109553423 A CN109553423 A CN 109553423A CN 201810018114 A CN201810018114 A CN 201810018114A CN 109553423 A CN109553423 A CN 109553423A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/22—Glass ; Devitrified glass
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6316—Binders based on silicon compounds
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
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- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
It is a kind of for producing the component of refractory concrete cob brick, the component includes cement-based gelling material, recycled fine aggregate and regenerated coarse aggregate, the cement-based gelling material includes aluminate cement, the recycled fine aggregate include weight percent be 10-50% size be 600 microns or regeneration cullet particle below, the concrete brick shown because of cullet particle fusing at high temperature thermal coefficient with temperature raising reduced property.There is at least 3 hours fire resistance periods, lower than 2000kg/m by the concrete brick that the component produces3Density and at least 7MPa compression strength.
Description
Technical field
The present invention relates to the concrete mixed with regeneration feed, more specifically for be related to include repeat glass fire resisting
Concrete.
Background technique
Concrete is to be combined together with cementitious material (such as cement) by aggregate (such as sand and rubble) and formed compound
Material.Usually, aggregate is to pass through excavation ore and be crushed to required size to be made.But excavation can destroy and work as
Ground environment, and ore field often needs the place of a large amount of aggregates far from those.
As people are to the more and more worries of exhaustive exploitation natural aggregate, regrown material is more and more by as aggregate
New sources, to realize sustainable development.Construction waste is a kind of current main recycled aggregate source, such as regeneration concrete
Aggregate and regeneration common brick aggregate；These recycled aggregates can be used to production concrete product, as inferior grade concrete and non-hold
Loaded concrete brick.Using the way of construction waste production green concrete brick in different regional successful implementations, and it is more next
It is accepted more.But the fire resistance of existing green concrete brick product is general, especially those intensity are relatively
High product, this undoubtedly limits green concrete brick answering in high fire resistant requirements occasion (such as four hours fire resistances)
With.As fire resistance requirement of the people to modern architecture especially skyscraper is higher and higher, industry is needed to construction material
Fire resistance improve and improve.It is in need to grind because the fire resistance of the existing concrete brick comprising reclaiming waste material is general
Issue it is a kind of include reclaiming waste material refractory concrete cob brick.
Summary of the invention
In order to solve the problems, such as that above-mentioned existing green concrete brick fire resistance is general, the present invention is matched by formula/component/
A kind of green refractory concrete cob brick has been invented than design.As described below, realization of the invention includes a series of process: mixed
The factory of the laboratory preparation of solidifying cob brick and characterization (compression strength, density and fire resistance), concrete brick produces as a trial and mixes
The standard fire test of solidifying cob brick.The present invention is by the cullet of incorporation selected size and selected cement and using optimization
Concrete mix realizes green concrete brick at least three hours fire resistances；With green coagulation made of certain match ratios
Cob brick even can achieve fire resisting in four hours.
In particular it relates to produce the component of green refractory concrete cob brick, which includes: containing aluminic acid salt water
Cement-based gelling material, recycled fine aggregate and the regenerated coarse aggregate of mud；Wherein, the weight of recycled fine aggregate 10-50% is regeneration
Cullet particle (≤600 microns).Since cullet particle can gradually melt under high enough temp, produced using said components
The thermal coefficient of concrete brick out can as the temperature rises and declines.
Detailed description of the invention
The volume variation with temperature situation of different ratio cement slurry is shown in Fig. 1 (a) to 1 (d).
The thermal coefficient variation with temperature situation of different ratio cement slurry is shown in Fig. 2 (a) to 2 (d).
Fig. 3 (a) to 3 (b) is shown using 100% recycled aggregate and 100% regeneration cullet as mortar made of aggregate
Temperature rise curve of the brick in fire resisting test.
The regeneration cullet particle that Fig. 4 (a) to 4 (b) is shown to be less than 0.6mm and greater than 2.36mm is made of aggregate
Mortar brick fire resisting test in temperature rise curve.
Fig. 5 is with the photo of concrete brick made of different fine aggregates/coarse aggregate ratio (F/C).
The temperature rise curve with concrete brick made of three optimized mix-proportions in fire resisting test is shown in Fig. 6.
The concrete brick mass-produced using optimized mix-proportion in factory is shown in Fig. 7.
It is tried in standard refractory in the back fire face that the wall sample being built by the concrete brick gone out in plant produced is shown in Fig. 8
Maximum temperature rise curve and average temperature rising curve in testing.
Specific embodiment
To ensure to build and build user, safe enough, the more important are ensured that the structural elements of building in a fire
It does not collapse within the regular hour and keeps certain performance, and component can stop the sprawling of the intensity of a fire and the propagation of heat.Therefore,
Construction material needs are graded according to relevant refractory standard, with the building safe enough for ensuring to build up using associated materials.
The rating scale of fire resistance includes two aspects of integrality and thermal insulation.Integrality is to measure construction material sample to prevent flame
It is passed through with hot gas and guarantees do not occur the performance of flame in the fiery face of back.Thermal insulation is then the temperature rise control for measuring sample for fiery face is carried on the back
System is in specified level performance below.
The novelty of the present invention is mix the cullet particle of certain selected sizes in concrete brick to improve brick
Fire resistance, this mainly improves the heat-proof quality of brick by incorporation glass particle.In general, cullet reach about in temperature
Start to soften at 600 DEG C, and temperature is higher, the mobility of glass is better.When being exposed to fire, the lesser cullet of size
Particle, such as size are not more than 600 microns, can absorb heat and gradually melt (at 1000 DEG C or less), so that one
It is reduced in fixing time across the heat of concrete brick；In addition, the fusing meeting of glass is so that the thermal conductivity of concrete brick reduces, this
Delay to pass through concrete brick when the heat in fiery face to a certain degree.This is because glass from solid-state phase changes be liquid phase process
The thermal coefficient that heat can be absorbed, and melt glass is lower than the thermal coefficient of corresponding solid glass particle.
For the fire resistance for improving concrete brick, the present invention is to the several important materials factors for influencing concrete brick fire resistance
It has carried out research and concrete brick proportion has been optimized accordingly.Specific research contents includes the type and content of cement, water
Gray scale (mass ratio of water and cement), the ratio of aggregate and cement, the size and ratio of coarse-fine aggregate and aggregate in aggregate
Type and content etc..Using suitable concrete matched, when material can be such that the fire resistance period of concrete brick doubles sometimes.
As described below, the present invention has successfully prepared refractory concrete using cullet particle and other concrete raw materials
Cob brick.In the embodiment of one embodiment, the component of refractory concrete cob brick contains the useless glass that size is not more than 600 microns
Glass particle and aluminate cement；More particularly, which improves the thermal insulation of concrete brick by using aglite
Can, and concrete brick is reduced in fire by using the lower ratio of mud, less coagulated material and suitable grading of aggregates
In destruction.
Present invention employs the fire test method listed in the 22nd part BS 476 and BS EN 1364-1 is mixed to assess
The fire resistance of solidifying cob brick.According to this two standards, integrality and thermal insulation are to evaluate two of sample fire resistance rating to refer mainly to
Mark.When carrying out fire test, the 3m x 3m wall sample being built by concrete brick to be tested is installed in fire test furnace
Aperture position works as fire on one side, and another side back is fiery.After experiment starts, the flame gun in experimental furnace is ignited flame, and in furnace
Temperature then follows temperature rise curve as defined in standard and is gradually increased to 1200 DEG C of highest.In order to measure the temperature that wall sample carries on the back fiery face
It rises, 5 thermocouples are attached to the back fire face of wall sample；And in order to evaluate the integrality of wall sample, experimenter can be in reality
Monitor the cracking situation of wall sample during testing, flare is scurried out situation and flexure situation.
Cement component:
The different component of concrete brick is bonded together by cement class coagulated material in the present invention.Therefore the present invention develops
A kind of complex cement coagulated material with low heat conductivity is gone out and has applied it in final refractory concrete brick product.
As described below, the trial of the present invention complex cement coagulated material of various combination and its performance is tested.
In the present invention, ground granulated blast furnace slag (GGBS), flyash (FA), silicon powder (SF) and aluminate cement (AC), as
The alternative materials of part ordinary portland cement are added in ordinary portland cement (OPC) and are blended that form complex cement solidifying
Tie material.Ground granulated blast furnace slag: ground granulated blast furnace slag is by the way that by the iron slag in blast furnace, (metallic ore separates (such as melting) and goes out gold
Residue after category；A kind of by-product of ironmaking and steel-making) quench obtained from then grinding.Ground granulated blast furnace slag it is main
Ingredient is calcium oxide (CaO, 30-50%), silica (SiO2, 28-38%), aluminium oxide (Al2O3, 8-24%) and magnesia
(MgO, 1-18%).This specification is outer unless specified otherwise, is previously mentioned percentage and is weight percentage.Flyash: flyash is
The particulate matter generated in coal combustion process is escaped with flue gas and the coal combustion product of formation.Depending on the ingredient of coal, different fine coal
Ash contains different amounts of silica (SiO2), aluminium oxide (Al2O3) and calcium oxide (CaO).SILICA FUME: SILICA FUME is using electricity
Arc furnace produces a kind of by-product when silicon or Antaciron, is that a kind of particle size is amorphous within the scope of 100-200nm
SiO2.Aluminate cement: aluminate cement contains the calcium aluminate for being reacted with aluminum material by lime material and being generated.Aluminic acid salt water
Aluminium oxide (Al in mud2O3) account for about the 39% to 80% of all components, and calcium oxide (CaO) accounts for about 20% to 40%.Aluminium oxide
With calcium oxide usually with monocalcium aluminate (CaAl2O4) form exist.Ordinary portland cement: ordinary portland cement is a kind of
Hydraulic cement generally comprises the calcium oxide, silica and aluminium oxide of different proportion.The composition of portland cement includes 61-
The SiO of 67% CaO, 19-23%2, 2.5-6% Al2O3, 0-6% Fe2O3With the sulfate of 1.5-4.5%.Silicate cement
The various components of mud have in ASTM C150/C150M-16 to be listed in detail.Two parts of standard disclosures are by reference simultaneously
Enter herein, and any component indicated in standard can be employed as ordinary portland cement of the invention.
In order to determine the proportion optimizing of one or more complex cement coagulated materials, the present invention is prepared and is tested a variety of
The complex cement of different ratio.Table 1 lists the details of complex cement proportion.For all proportions, water and powder
Mass ratio is all set to 0.35.In these proportions, the contents of ordinary portland cement alternative materials from 0% increase continuously to
30% (every 10% is an increment).Because of the reason of working performance, the content of SILICA FUME is up to 15%, and (every 5% is an increasing
Amount).
Table 1: the match ratio of complex cement coagulated material
| Group | Flyash | Ground granulated blast furnace slag | Silicon powder | Aluminate cement | Ordinary portland cement | Water |
| Control group | 0 | 0 | 0 | 0 | 1 | 0.35 |
| C90FA10 | 0.1 | 0 | 0 | 0 | 0.9 | 0.35 |
| C80FA20 | 0.2 | 0 | 0 | 0 | 0.8 | 0.35 |
| C70FA30 | 0.3 | 0 | 0 | 0 | 0.7 | 0.35 |
| C90G10 | 0 | 0.1 | 0 | 0 | 0.9 | 0.35 |
| C80G20 | 0 | 0.2 | 0 | 0 | 0.8 | 0.35 |
| C70G30 | 0 | 0.3 | 0 | 0 | 0.7 | 0.35 |
| C95SF5 | 0 | 0 | 0.05 | 0 | 0.95 | 0.35 |
| C90SF10 | 0 | 0 | 0.1 | 0 | 0.9 | 0.35 |
| C85SF15 | 0 | 0 | 0.15 | 0 | 0.85 | 0.35 |
| C90AC10 | 0 | 0 | 0 | 0.1 | 0.9 | 0.35 |
| C80AC20 | 0 | 0 | 0 | 0.2 | 0.8 | 0.35 |
| C70AC30 | 0 | 0 | 0 | 0.3 | 0.7 | 0.35 |
In the present invention, manufactured slurry is prepared to the sample of required size after complex cement is mixed with water.It is conserved in mould
After 24 hours, sample by from taken out in mould and immerse in sink continue maintenance 27 days.Sample be then placed into 105 DEG C of stoves into
Row drying.Sample after drying is then transferred in Muffle furnace and is heated at a certain temperature.The present invention uses
Heating temperature include room temperature, 300 DEG C, 600 DEG C, 900 DEG C and 1200 DEG C.After sample is transferred to Muffle furnace, burner hearth with 3 DEG C/
The rate of min starts to warm up until reaching target temperature, then in this temperature holding 2 hours.Burner hearth is then subjected to natural cooling.
In order to assess the influence heated to sample thermal stability and heat-proof quality, the present invention measures all samples heating front and back
Volume change and thermal coefficient variation.
Fig. 1 (a), 1 (b), 1 (c) and 1 (d) are respectively illustrated containing ground granulated blast furnace slag (GGBS), flyash (FA), silicon powder
(SF) and the complex cement sample of aluminate cement (AC) different temperatures heating after residual volume ratio (after heating volume with plus
The ratio of hot front volume).As seen from Figure 1, the volume of all complex cement samples can be reduced after the heating, and be heated
Temperature is higher, and it is bigger that volume reduces amplitude.In all samples, the sample of 30% ordinary portland cement is replaced with aluminate cement
Product its volume changes is minimum, and residual volume is up to 87.4%.According to these as a result, being proposed with answering containing 30% aluminate cement
Coagulated material of the cement as refractory concrete cob brick.
Other than the thermal stability characterized with volume change, the heat-proof quality of coagulated material is also critically important, because of condensation material
Expect that the heat-proof quality contribution to entire concrete brick is very big.Fig. 2 (a), 2 (b), 2 (c) and 2 (d) respectively illustrate containing GGBS,
Thermal coefficient of the complex cement sample of FA, SF and AC after different temperatures heating.As seen from Figure 2, in room temperature to 900 DEG C
In range, the thermal coefficient after all complex cement sample heating increases with temperature and is gradually decreased.But complex cement sample
But exceed its thermal coefficient after 900 DEG C of heating in the thermal coefficient after 1200 DEG C of heating.Reason is presumed as follows: room temperature extremely
Thermal coefficient decline within the scope of 900 DEG C is that the decomposition, which will lead in sample, to be formed very as caused by C-S-H and CH pyrolytic
It is porous；And sample can be sintered in 1200 DEG C of heating, to become that comparison is close and thermal coefficient increases in structure.All
In complex cement sample, the thermal coefficient of the complex cement sample containing aluminate cement is minimum, especially in aluminate cement
In the case that comparision contents are high.The thermal coefficient of complex cement sample containing aluminate cement is minimum to can reach 0.52W/mk.
In view of complex cement thermal stability and heat-insulated both sides performance, the complex cement containing 30% aluminate cement
It is a proportion optimizing suitable for producing the cement setting material of refractory concrete cob brick of the present invention.
Glass particle size:
In the present invention, regenerated glass particle is used as the fine aggregate and heat-barrier material of concrete brick.
In order to compare the heat-proof quality of recycled fine aggregate and not sieved regenerated glass particle, the present invention is to thin containing regeneration
Aggregate and mortar brick containing regenerated glass particle have done laboratory fire resistance test.Mortar used specifically matches such as 2 institute of table
Show.Muffle furnace be used to carry out laboratory fire resistance test.When being tested, mortar brick sample is placed on muffle furnace hearth opening
Position, the high temperature being exposed in burner hearth on one side, and another side is then exposed in normal temperature air.Temperature change in muffle furnace hearth
It is substantially uniform with temperature rise curve specified in BS 476-22 or BS EN 1364-1.The temperature rise in hot face, mortar are carried on the back for measurement sample
Brick carries on the back hot face installation, and there are five thermocouples.
Two kinds of samples are after the fire test of laboratory without apparent integrity issue.Fig. 3 (a) and 3 (b), which is shown, to be contained
There are recycled fine aggregate and the mortar brick of not sieved regeneration cullet to carry on the back temperature rise curve of the hot face in the fire resistance test of laboratory.By scheming
3 as it can be seen that the regenerated glass particle of not sieved mistake is not improved the heat-proof quality of mortar brick.For optimised coagulation cob brick
Then heat-proof quality, the present invention study the heat-proof quality of different size cullet particles.The glass particle ruler of research
Very little includes < 0.6mm, 0.6-1.18mm, 1.18-2.36mm and 2.36-4.75mm.Sample for this research is similarly such as table 2
The shown mortar containing regenerated glass particle.
Table 2: the mortar mix ratio containing recycled fine aggregate or regenerated glass particle
| Ordinary portland cement | Regenerate cullet/recycled fine aggregate | Water |
| 1 | 0.5 | 0.3 |
All samples are after the fire test of laboratory without apparent integrity issue.Fig. 4 (a) and 4 (b), which is shown, uses size
Regenerated glass particle less than 0.6mm and the mortar brick with size greater than the preparation of the regenerated glass particle of 2.36mm carry on the back hot face
Temperature rise curve in the fire test of laboratory.It is regenerated it can be seen from Fig. 4 (a) and 4 (b) using smaller size (< 0.6mm)
The heat-proof quality of the mortar brick of glass particle is substantially better than the mortar brick containing larger size glass (> 2.36mm).Therefore, size
Repeat glass particle no more than 600 microns is selected to prepare refractory concrete cob brick.
The ratio of fine aggregate and coarse aggregate:
In the present invention, for produce refractory concrete cob brick recycled fine aggregate size range about 0.075mm extremely
Between 4.75mm, and the size range of regenerated coarse aggregate is about in 4.75mm between 9.5mm.
In order to produce the closely knit concrete brick of surfacing, the present invention carries out the different proportion of fine aggregate and coarse aggregate
Research, including 2,2.5,3,3.5 and 4 (fine aggregate amount ratio coarse aggregate dosages).The concrete prepared according to aforementioned proportion
The photo of brick sample is respectively as shown in Fig. 5 (a) to 5 (e).
It can be received to prepare surface smoothness it can be seen from the concrete brick appearance shown in Fig. 5 photo
The amount ratio of concrete brick, fine aggregate and coarse aggregate should be greater than 3.
Final match ratio:
Based on result above, personnel of the present invention has devised four sections of different refractory concrete cob brick proportions, as this hair
The example of bright refractory concrete cob brick.Table 3 gives the specific proportion of four sections of difference refractory concrete cob brick examples.
Table 3: the match ratio (mass ratio) of example refractory concrete cob brick
Fig. 6 (a) to 6 (c) is the back heat of the concrete brick prepared according to match ratio 1 to 3 in the fire resistance test of laboratory respectively
Face temperature rise curve, and three kinds of bricks after 5 hours laboratory fire tests without apparent integrity issue.According to standard BS
476-22 or BS EN 1364-1, sample carries on the back the average temperature rising in fiery face and maximum temperaturerise is respectively necessary for lower than 140 DEG C and 180 DEG C.
As seen from Figure 6, even if all three match ratios can be transferred through the heat-proof quality index of fire resistance test after five hours.Thus may be used
See, ordinary portland cement mix aluminate cement can effectively enhance the fire resistance of concrete brick as cement setting material
Energy.
Four match ratios according to listed by table 3 have carried out the batch production of concrete brick using half-dried brick-making process in the factory.
Fig. 7 is the photo of the concrete brick gone out in plant produced.Experiment shows the concrete brick that match ratio is produced according to the present invention
Density is below 2000kg/m3, and intensity is in 10MPa or more.In addition to half-dried brick-making process used in example, refractory concrete of the present invention
Cob brick can also be prepared with other concrete brick preparation methods, such as casting method.
According to the experimental method listed in standard BS EN 1364-1 or BS 476-22, to by according to match ratio 2 in table 3
The wall sample for the 3m x 3m x 0.1m (thickness) that the concrete brick prepared is built into has carried out three hours full-scale marks
Quasi- fire resistance test.The result shows that the wall sample is equal in terms of thermal insulation, integrality and flexure after three hours fire tests
Meet the requirement in fire resistance test standard.Fig. 8 shows the maximum temperature rise curve peace samming in the fiery face of back of the wall sample
Rise curve.After three hours, wall sample carries on the back the maximum temperature rise in fiery face and average temperature rising is respectively about 80 DEG C and 65 DEG C, this is remote low
The temperature rise index listed in relevant criterion.
Those skilled in the art are by foregoing description content it is found that the form of implementation of technical solution of the present invention is varied.Cause
This, although specific example has been combined to describe embodiment, the range of embodiment be should not be limited thereto, because of ability
Field technique personnel can be apparent from other modifications after having studied present specification and claims.
Claims (14)
1. a kind of for producing the component of refractory concrete cob brick, the component include cement-based gelling material, recycled fine aggregate and
Regenerated coarse aggregate, the cement-based gelling material include aluminate cement, and the recycled fine aggregate includes that the size of 10-50% is
600 microns or regeneration cullet particle below；Because the cullet particle can melt at high temperature, produced by the component
The thermal coefficient of concrete brick can increase with temperature and be declined.
2. component according to claim 1, wherein the cement-based gelling material accounts for the weight percent of all components
It than being 5% to 15%, and include ordinary portland cement that weight percent is 50-90% and weight percent is 10 to 50%
Aluminate cement.
3. component according to claim 1, wherein the cement-based gelling material further includes one or more selected from fine coal
The alternative materials of ash, GGBS or silicon powder are to substitute part ordinary portland cement, and the alternative materials are in cement-based gelling material
In weight percent be 10-50%.
4. component according to claim 1, wherein the component also includes the water that weight percent is 5% to 10%.
5. component according to claim 1, wherein the component also includes the regeneration that weight percent is 75 to 90%
Fine aggregate and the regenerated coarse aggregate.
6. component according to claim 1, wherein range of the mass ratio of the fine aggregate and the coarse aggregate 1 to 5
It is interior.
7. component according to claim 1, wherein being had by the concrete brick that the component is produced lower than 2000kg/m3
Density, the compression strength not less than 7MPa and at least 3 hours fire resistance periods.
8. a kind of refractory concrete cob brick of component production according to claim 1.
9. a kind of refractory concrete cob brick is at least 75% reclaimed materials comprising weight percent, and anti-with at least 7MPa
Compressive Strength, the refractory concrete cob brick include cement-based gelling material, recycled fine aggregate and regenerated coarse aggregate, the cement base rubber
Gel material includes aluminate cement, the recycled fine aggregate include weight percent be 10-50% size be 600 microns or with
Under regeneration cullet particle, the concrete brick shows thermal coefficient due to cullet particle fusing at high temperature
It is increased and reduced property with temperature.
10. refractory concrete cob brick according to claim 9, wherein the cement-based gelling material accounts for whole components
Weight percent is 5% to 15%, and includes ordinary portland cement that weight percent is 50-90% and weight percent is
The aluminate cement of 10-50%.
11. refractory concrete cob brick according to claim 9, wherein the cement-based gelling material further includes one or more
Alternative materials selected from flyash, GGBS or silicon powder are to substitute part ordinary portland cement, and the alternative materials are in cement base
Weight percent in cementitious material is 10-50 %.
12. refractory concrete cob brick according to claim 9, the water for being also 5% to 10% comprising weight percent hundred.
13. refractory concrete cob brick according to claim 9, wherein the mass ratio of the fine aggregate and the coarse aggregate is 1
To between 5 range.
14. refractory concrete cob brick according to claim 9, wherein made concrete brick, which has, is lower than 2000kg/m3's
Density, the compressive resistance not less than 7MPa and at least 3 hours fire resistance periods.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/716488 | 2017-09-26 | ||
| US15/716,488 US10450230B2 (en) | 2017-09-26 | 2017-09-26 | Fire resistant eco concrete blocks containing waste glass |
Publications (2)
| Publication Number | Publication Date |
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| CN109553423A true CN109553423A (en) | 2019-04-02 |
| CN109553423B CN109553423B (en) | 2021-11-19 |
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| US (1) | US10450230B2 (en) |
| CN (1) | CN109553423B (en) |
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| SE2050089A1 (en) * | 2020-01-30 | 2021-07-31 | Conpore Tech Ab | Concrete material |
| CN111943584B (en) * | 2020-07-17 | 2022-02-22 | 深圳市鹏城基业混凝土有限公司 | Production process of recycled concrete |
| CN112777980B (en) * | 2021-01-08 | 2022-05-17 | 湖北工业大学 | Preparation method of waste glass fire-resistant high-strength concrete |
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Also Published As
| Publication number | Publication date |
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| CN109553423B (en) | 2021-11-19 |
| US10450230B2 (en) | 2019-10-22 |
| US20190092685A1 (en) | 2019-03-28 |
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